Ordinary sand can also be used as a cat litter, that is, you have to change, ordinary sand can absorb urine, but not deodorant said. When the cat sand touches water or urine will condense into a small ball, you take the ball away, the rest of the cat sand can continue to use, will not leave too many unpleasant smells and bacteria. So you can also save trouble, love the clean cat will also like.